OpenAI Realtime API vs OpenRouter vs Defapi

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
OpenAI Realtime API
vs
Competitor 1
OpenRouter
Competitor 2
DDefapi
Competitor 3
Suggested competitors for OpenAI Realtime API: ElevenLabs API91% Deepgram90% Microsoft Azure AI Speech86% Deepgram Voice Agent API84% Hume EVI84% Inworld AI83% Cartesia83% Fixie.ai81%
Compare
3 tools · best value per row highlighted
Your tool OpenAI Realtime API
platform.openai.com
The OpenAI Realtime API is a developer interface for building voice agents that listen and speak in real time.
Remove
Competitor OpenRouter
openrouter.ai
Every model, one endpoint
Make main Remove
Competitor DDefapi
defapi.org
You know how managing multiple AI provider integrations usually means maintaining separate codebases for each vendor
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
—
22Mvisits/mo
2.4Kvisits/mo
MoM change
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▲ 14.6%
▼ 42.6%
6-month growth
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+39.6%
-86.2%
Global rank web
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#2,023
#4,650,820
Avg. last 3 months
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19.5M
4.8K
Bounce rate lower is better
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32%
36%
Pages / visit
—
7.7
1.4
Visit duration
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6m 13s
7s
Traffic sources
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● Direct 89% · ● Referral 10%
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OpenAI Realtime APIOpenRouterDefapi
05.5M11M16.5M22MOpenRouter · 7.5MOpenRouter · 8.6MOpenRouter · 8.4MOpenRouter · 11.2MOpenRouter · 15.8MOpenRouter · 17.9MOpenRouter · 16.8MOpenRouter · 17.3MOpenRouter · 19.2MOpenRouter · 22MDefapi · 11.1KDefapi · 13KDefapi · 12.4KDefapi · 17.7KDefapi · 9.4KDefapi · 6.2KDefapi · 7.6KDefapi · 4.2KDefapi · 2.4K1K10K100K1M10M100MOpenRouter · 7.5MOpenRouter · 8.6MOpenRouter · 8.4MOpenRouter · 11.2MOpenRouter · 15.8MOpenRouter · 17.9MOpenRouter · 16.8MOpenRouter · 17.3MOpenRouter · 19.2MOpenRouter · 22MDefapi · 11.1KDefapi · 13KDefapi · 12.4KDefapi · 17.7KDefapi · 9.4KDefapi · 6.2KDefapi · 7.6KDefapi · 4.2KDefapi · 2.4KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
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Freemium
Paid
Starting price
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Free tier
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Free tier
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–
Free trial
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–
–
API access
Plans
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Free FreeStandard Custom/moBusiness Custom/moEnterprise Custom
Gemini 3.1 Pro Preview $1/$6/per requestClaude Sonnet 4.6 $1.5/$7.5/per requestClaude Opus 4.6 $2.5/$12.5/per requestSora 2 Stable $0.175+/per request+2 more
Capabilities input → output
Input
TextImagesAudio
AudioVideoTextImages
AudioImagesText
Output
TextAudio
VideoTextImagesAudio
TextImagesAudio
Skill level
Advanced
Advanced
Advanced
Categories
Development & CodeVoice & SpeechAI APIAI Text-to-Speech+2 more
Development & CodeAI APILarge Language Models (LLMs)
Development & CodeAI API
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
9
5
4
APIs
API integrations
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–
LLM gateway
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–
Voice agents
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–
Voice assistance
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–
API management
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–
Developer tools
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Large language models
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Text to speech
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Transcription
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Voice
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–
API security
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–
Agent creation
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–
Audio translation
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–
Development
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–
LLM comparison
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–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
0
0
0
Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.